The Earth faces a new threat - invasion from the thick-headed, extraterrestrial clan Dum-Dum. You must stop this menace using your mathematical quick-wit and eradicate them from the face of their planet, before they reach the portals and invade the Earth!

- Load your UN Blast-O-Matic vessel’s energy cannons by solving math problems and choosing the correct answer.
-With successful defense you gain smart points, which can be spent to upgrade your vessel and interface, improving your chances in the counter-offensive.